KR960013213B1 - 위치맞춤 제어시스템 - Google Patents
위치맞춤 제어시스템 Download PDFInfo
- Publication number
- KR960013213B1 KR960013213B1 KR1019920022063A KR920022063A KR960013213B1 KR 960013213 B1 KR960013213 B1 KR 960013213B1 KR 1019920022063 A KR1019920022063 A KR 1019920022063A KR 920022063 A KR920022063 A KR 920022063A KR 960013213 B1 KR960013213 B1 KR 960013213B1
- Authority
- KR
- South Korea
- Prior art keywords
- movement
- time
- target
- moving
- magnetic head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/54—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head into or out of its operative position or across tracks
- G11B5/55—Track change, selection or acquisition by displacement of the head
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
- G05B19/416—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by control of velocity, acceleration or deceleration
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B21/00—Head arrangements not specific to the method of recording or reproducing
- G11B21/02—Driving or moving of heads
- G11B21/08—Track changing or selecting during transducing operation
- G11B21/081—Access to indexed tracks or parts of continuous track
- G11B21/083—Access to indexed tracks or parts of continuous track on discs
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/54—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head into or out of its operative position or across tracks
- G11B5/55—Track change, selection or acquisition by displacement of the head
- G11B5/5521—Track change, selection or acquisition by displacement of the head across disk tracks
- G11B5/5526—Control therefor; circuits, track configurations or relative disposition of servo-information transducers and servo-information tracks for control thereof
- G11B5/553—Details
- G11B5/5547—"Seek" control and circuits therefor
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/34—Director, elements to supervisory
- G05B2219/34047—Dsp digital signal processor
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/41—Servomotor, servo controller till figures
- G05B2219/41192—Compensation for different response times, delay of axis
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/41—Servomotor, servo controller till figures
- G05B2219/41355—Electro magnetic coil actuator, voice coil
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/41—Servomotor, servo controller till figures
- G05B2219/41367—Estimator, state observer, space state controller
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/43—Speed, acceleration, deceleration control ADC
- G05B2219/43025—Acceleration, deceleration is polynomial, derivative is zero on stop position
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/43—Speed, acceleration, deceleration control ADC
- G05B2219/43034—Form of profile, ramp, trapezoid, S-curve, exponential
Landscapes
- Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Control Of Position Or Direction (AREA)
- Moving Of Head For Track Selection And Changing (AREA)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3307450A JP2736715B2 (ja) | 1991-11-22 | 1991-11-22 | 位置決め制御方式 |
JP91-307450 | 1991-11-22 | ||
JP91-324148 | 1991-12-09 | ||
JP3324148A JP2736716B2 (ja) | 1991-12-09 | 1991-12-09 | 位置決め制御方式 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR930010926A KR930010926A (ko) | 1993-06-23 |
KR960013213B1 true KR960013213B1 (ko) | 1996-10-02 |
Family
ID=26565110
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019920022063A Expired - Fee Related KR960013213B1 (ko) | 1991-11-22 | 1992-11-23 | 위치맞춤 제어시스템 |
Country Status (4)
Country | Link |
---|---|
US (1) | US5469414A (enrdf_load_stackoverflow) |
EP (1) | EP0543654B1 (enrdf_load_stackoverflow) |
KR (1) | KR960013213B1 (enrdf_load_stackoverflow) |
DE (1) | DE69227434T2 (enrdf_load_stackoverflow) |
Families Citing this family (70)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6141300A (en) | 1989-06-20 | 2000-10-31 | Discovision Associates | Optical actuator including lens assembly with optical axis having symmetric suspensory forces acting thereon and optical disc system including same |
US5265079A (en) | 1991-02-15 | 1993-11-23 | Applied Magnetics Corporation | Seek actuator for optical recording |
US6069857A (en) | 1991-02-15 | 2000-05-30 | Discovision Associates | Optical disc system having improved circuitry for performing blank sector check on readable disc |
US5729511A (en) | 1991-02-15 | 1998-03-17 | Discovision Associates | Optical disc system having servo motor and servo error detection assembly operated relative to monitored quad sum signal |
US5677899A (en) * | 1991-02-15 | 1997-10-14 | Discovision Associates | Method for moving carriage assembly from initial position to target position relative to storage medium |
US6236625B1 (en) | 1991-02-15 | 2001-05-22 | Discovision Associates | Optical disc system having current monitoring circuit with controller for laser driver and method for operating same |
US5691617A (en) * | 1993-07-12 | 1997-11-25 | Seagate Technology, Inc. | Disc drive transducer deadbeat settle method utilizing interval correction |
DE69525284T2 (de) | 1994-06-07 | 2002-10-24 | Hitachi, Ltd. | Informationsaufzeichnungsgerät und Verfahren zu dessen Steuerung zur Aufzeichnung/Wiedergabe von Information durch Auswahl eines Betriebsmodus |
DE4441240C1 (de) * | 1994-11-19 | 1996-05-09 | Leica Lasertechnik | Vorrichtung und Verfahren zur Regelung der Bewegung eines Gegenstandes |
JP3829994B2 (ja) * | 1995-01-06 | 2006-10-04 | 富士通株式会社 | ファイル装置の開発装置及び開発システム |
US6091684A (en) | 1995-01-25 | 2000-07-18 | Discovision Associates | Optical disc system and method for changing the rotational rate of an information storage medium |
US5748578A (en) | 1995-01-25 | 1998-05-05 | Discovision Associates | Colpitts type oscillator having reduced ringing and improved optical disc system utilizing same |
US6434087B1 (en) | 1995-01-25 | 2002-08-13 | Discovision Associates | Optical disc system and method for controlling bias coil and light source to process information on a storage medium |
US5781365A (en) * | 1995-03-07 | 1998-07-14 | Cirrus Logic, Inc. | Sliding mode control of a magnetoresistive read head for magnetic recording |
US5825582A (en) * | 1995-03-07 | 1998-10-20 | Cirrus Logic, Inc. | Sliding mode control of a disk drive actuator for positioning a read/write head over a selected track during seeking and tracking operations |
KR100277073B1 (ko) * | 1995-07-24 | 2001-01-15 | 윤종용 | 자기 디스크 구동장치에서 자기 헤드의 속도 및 위치 추정기 |
JP4100706B2 (ja) * | 1995-07-26 | 2008-06-11 | シーラス ロジック,インコーポレイテッド | ディスクドライブアクチュエータの滑動モード制御において改良されたチャタリング低減 |
KR100208373B1 (ko) * | 1995-08-01 | 1999-07-15 | 윤종용 | 이중의 헤드를 가지는 디스크 기록장치와 그의 헤드스위칭 제어방법 |
JPH0973618A (ja) * | 1995-09-07 | 1997-03-18 | Toshiba Corp | ディスク記録再生装置のヘッド位置決め制御システム及びそのシステムに適用する速度制御方法 |
US6125000A (en) * | 1996-05-21 | 2000-09-26 | Maxtor Corporation | Disk drive seek control system utilizing predicted motion parameter and dynamic trajectory alignment |
US5949608A (en) * | 1996-06-05 | 1999-09-07 | Mobile Storage Technology Inc. | Time dependent velocity-controlled disk drive actuator system |
KR100251924B1 (ko) * | 1996-09-02 | 2000-04-15 | 윤종용 | 탐색시 소음을 줄이기 위한 적응피이드포워드 제어방법 |
US5781451A (en) * | 1997-01-21 | 1998-07-14 | Xerox Corporation | Method and apparatus for tracking the motion of an imaging member with a line writing device using a rational electronic gearbox |
US6046878A (en) * | 1997-04-30 | 2000-04-04 | Seagate Technology, Inc. | Object positioning using discrete sliding mode control with variable parameters |
JP3234175B2 (ja) * | 1997-06-26 | 2001-12-04 | 株式会社東芝 | デジタル制御装置 |
JPH1166695A (ja) * | 1997-08-13 | 1999-03-09 | Internatl Business Mach Corp <Ibm> | ディスクドライブ装置、サーボ制御装置及び制御装置 |
US5920995A (en) | 1997-12-08 | 1999-07-13 | Sammut; Dennis J. | Gunsight and reticle therefor |
US7856750B2 (en) * | 1997-12-08 | 2010-12-28 | Horus Vision Llc | Apparatus and method for calculating aiming point information |
US7937878B2 (en) | 1997-12-08 | 2011-05-10 | Horus Vision Llc | Apparatus and method for calculating aiming point information |
US7832137B2 (en) | 1997-12-08 | 2010-11-16 | Horus Vision, Llc | Apparatus and method for calculating aiming point information |
US6516699B2 (en) * | 1997-12-08 | 2003-02-11 | Horus Vision, Llc | Apparatus and method for calculating aiming point information for rifle scopes |
US6314473B1 (en) | 1998-03-05 | 2001-11-06 | Convolve, Inc. | System for removing selected unwanted frequenices in accordance with altered settings in a user interface of a data storage device |
US7433144B2 (en) | 1999-03-04 | 2008-10-07 | Convolve, Inc. | Dynamic system control method |
JP2000337928A (ja) * | 1999-05-27 | 2000-12-08 | Sony Corp | 位置検出装置および位置検出信号の補正方法 |
JP2001084720A (ja) * | 1999-08-24 | 2001-03-30 | Internatl Business Mach Corp <Ibm> | サーボ装置、アクセス機構の制御方法、およびディスク装置 |
US6594106B1 (en) * | 1999-10-29 | 2003-07-15 | International Business Machines Corporation | Adaptive servo estimator and compensator for coil and carriage deformation in voice coil motor driven hard disk drive |
US6510019B1 (en) * | 1999-11-12 | 2003-01-21 | Maxtor Corporation | Acceleration tracking position controller |
US6549364B1 (en) * | 1999-12-15 | 2003-04-15 | Samsung Electronics Co., Ltd. | Optimization method and apparatus for a generalized fourier seek trajectory for a hard disk drive servomechanism |
US6501613B1 (en) * | 1999-12-15 | 2002-12-31 | Samsung Electronics Co., Ltd. | Generalized Fourier seek method and apparatus for a hard disk drive servomechanism |
US6704159B2 (en) | 2000-06-20 | 2004-03-09 | Seagate Technology Llc | Automatic acoustic management system for a disc drive |
US6801384B2 (en) | 2000-09-14 | 2004-10-05 | Samsung Electronics Co., Ltd. | Voltage-constrained sinusoidal seek servo in hard disk drives |
US6744590B2 (en) | 2000-09-14 | 2004-06-01 | Samsung Electronics Co., Inc. | Seek trajectory adaptation in sinusoidal seek servo hard disk drives |
US6762902B2 (en) | 2000-12-15 | 2004-07-13 | Samsung Electronics Co., Ltd. | Time-varying, non-synchronous disturbance identification and cancellation in a rotating disk storage device |
JP2002258902A (ja) | 2001-02-27 | 2002-09-13 | Internatl Business Mach Corp <Ibm> | 回転記録装置およびその制御方法 |
JP3796435B2 (ja) * | 2001-11-16 | 2006-07-12 | 株式会社日立グローバルストレージテクノロジーズ | 位置決め制御装置 |
JP2003228932A (ja) * | 2002-01-30 | 2003-08-15 | Toshiba Corp | ディスク記憶装置及びヘッド移動制御方法 |
US6845951B2 (en) * | 2002-04-08 | 2005-01-25 | The Aerospace Corporation | Method of controlling pointing for a flexible structure |
US20030206502A1 (en) * | 2002-05-02 | 2003-11-06 | Xiao Lin | Method and apparatus for providing motor control in an optical disk drive system |
US7437201B2 (en) * | 2003-01-14 | 2008-10-14 | Cullen Christopher P | Electric motor controller |
US7019482B2 (en) * | 2003-05-29 | 2006-03-28 | Sodick Co., Ltd. | Motion controller having sliding mode controller |
US7190140B2 (en) * | 2004-04-05 | 2007-03-13 | Sodick Co., Ltd. | Sliding mode controller position control device |
US7411465B2 (en) * | 2005-07-15 | 2008-08-12 | Watson Industries, Inc. | AGC circuit for the reduction of harmonics in the drive signal |
US7319570B2 (en) | 2005-09-19 | 2008-01-15 | Seagate Technology Llc | Random vibration and shock compensator using a disturbance observer |
US7903336B2 (en) | 2005-10-11 | 2011-03-08 | Gsi Group Corporation | Optical metrological scale and laser-based manufacturing method therefor |
KR100744127B1 (ko) * | 2006-02-09 | 2007-08-01 | 삼성전자주식회사 | 디스크 드라이브의 트랙 탐색 서보 제어 방법, 장치,저장매체와 이를 이용한 디스크 드라이브 |
JP4509952B2 (ja) * | 2006-03-03 | 2010-07-21 | 東芝ストレージデバイス株式会社 | 制御装置、ディスク装置、及びシーク軌道生成方法 |
JP4550764B2 (ja) | 2006-04-26 | 2010-09-22 | 東芝ストレージデバイス株式会社 | シーク制御方法、シーク制御装置およびディスク装置 |
JP5038998B2 (ja) * | 2007-10-26 | 2012-10-03 | 株式会社東芝 | シーク制御装置、およびシーク制御のための制御データ生成方法 |
US7551525B1 (en) * | 2008-03-31 | 2009-06-23 | International Business Machines Corporation | Method for preventing excessive skipping on audio disks |
WO2010132831A1 (en) | 2009-05-15 | 2010-11-18 | Dennis Sammut | Apparatus and method for calculating aiming point information |
DE102010013526A1 (de) * | 2010-03-31 | 2011-10-06 | Weiß GmbH Sondermaschinentechnik | Verfahren zur rotatorischen und/oder linearen Bewegung eines Werkstücks |
US8172139B1 (en) | 2010-11-22 | 2012-05-08 | Bitterroot Advance Ballistics Research, LLC | Ballistic ranging methods and systems for inclined shooting |
US11480411B2 (en) | 2011-01-01 | 2022-10-25 | G. David Tubb | Range-finding and compensating scope with ballistic effect compensating reticle, aim compensation method and adaptive method for compensating for variations in ammunition or variations in atmospheric conditions |
US8701330B2 (en) | 2011-01-01 | 2014-04-22 | G. David Tubb | Ballistic effect compensating reticle and aim compensation method |
US9121672B2 (en) | 2011-01-01 | 2015-09-01 | G. David Tubb | Ballistic effect compensating reticle and aim compensation method with sloped mil and MOA wind dot lines |
US8893423B2 (en) | 2011-05-27 | 2014-11-25 | G. David Tubb | Dynamic targeting system with projectile-specific aiming indicia in a reticle and method for estimating ballistic effects of changing environment and ammunition |
EP2802837B1 (en) | 2012-01-10 | 2019-03-13 | HVRT Corporation | Apparatus and method for calculating aiming point information |
US9500444B2 (en) | 2013-01-11 | 2016-11-22 | Hvrt. Corp. | Apparatus and method for calculating aiming point information |
JP2018113085A (ja) * | 2017-01-10 | 2018-07-19 | 株式会社東芝 | 磁気ディスク装置及びライト方法 |
US10823532B2 (en) | 2018-09-04 | 2020-11-03 | Hvrt Corp. | Reticles, methods of use and manufacture |
Family Cites Families (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5984379A (ja) * | 1982-11-08 | 1984-05-16 | Nec Corp | デイスク状記録担体のトラツクアクセス装置 |
JPS6032134A (ja) * | 1983-07-30 | 1985-02-19 | Ricoh Co Ltd | トラッキング制御装置 |
JPS61113175A (ja) * | 1984-11-07 | 1986-05-31 | Fujitsu Ltd | ヘツドの位置付け制御方式 |
CA1255385A (en) * | 1985-01-31 | 1989-06-06 | Shigeru Arai | Track servo system for controllably projecting an optical beam to an optical disk |
US4740939A (en) * | 1985-05-22 | 1988-04-26 | Hitachi Ltd. | Apparatus for reproducing information recorded on a disk |
KR900004182B1 (ko) * | 1986-03-31 | 1990-06-18 | 삼성전자 주식회사 | 3비임 방식 광픽업 회절격자 조정장치 |
US4719610A (en) * | 1986-04-02 | 1988-01-12 | Optotech, Inc. | Objective lens velocity control system for use in an optical data storage system |
US4697127A (en) * | 1986-06-09 | 1987-09-29 | International Business Machines Corporation | Adaptive control technique for a dynamic system |
US4775903A (en) * | 1986-10-14 | 1988-10-04 | Hewlett-Packard Company | Sampled servo seek and track follow system for a magnetic disc drive |
US4956789A (en) * | 1987-05-13 | 1990-09-11 | Hitachi, Ltd. | Method and apparatus for driving a servo system while suppressing residual vibration generated during position control |
US4779251A (en) * | 1987-06-12 | 1988-10-18 | Optimem | Optical disk memory system with closed loop micro-jump between adjacent tracks |
JPH0814945B2 (ja) * | 1988-04-06 | 1996-02-14 | 株式会社東芝 | 磁気ディスク装置の磁気ヘッド移動制御装置 |
JPH0654543B2 (ja) * | 1988-07-22 | 1994-07-20 | シャープ株式会社 | 光ピックアップのトラックジャンプ装置 |
JPH0291864A (ja) * | 1988-09-27 | 1990-03-30 | Nec Ibaraki Ltd | 磁気ディスク装置 |
JPH0736130B2 (ja) * | 1989-01-10 | 1995-04-19 | 富士通株式会社 | サーボ位置決め回路 |
WO1990010930A1 (en) * | 1989-03-08 | 1990-09-20 | International Business Machines Corporation | Estimator positioning system and method |
JPH0831263B2 (ja) * | 1989-04-04 | 1996-03-27 | 株式会社東芝 | 磁気記録再生装置の磁気ヘッド駆動制御装置 |
US4972350A (en) * | 1989-05-26 | 1990-11-20 | Literal Corporation | Position mode track seek servo for high capacity disk drive system |
US5050146A (en) * | 1989-07-31 | 1991-09-17 | Literal Corporation | Track seek recovery system and method |
US5033039A (en) * | 1989-07-31 | 1991-07-16 | Literal Corporation | Positioning system for flexure mounted read/write head |
JP2657561B2 (ja) * | 1990-02-09 | 1997-09-24 | 富士通株式会社 | 位置決め制御方式 |
JP2857451B2 (ja) * | 1990-02-22 | 1999-02-17 | キヤノン株式会社 | ディジタルサーボ装置 |
JP2685622B2 (ja) * | 1990-04-06 | 1997-12-03 | 株式会社日立製作所 | 位置決め制御方法および装置 |
-
1992
- 1992-11-20 EP EP92310604A patent/EP0543654B1/en not_active Expired - Lifetime
- 1992-11-20 DE DE69227434T patent/DE69227434T2/de not_active Expired - Fee Related
- 1992-11-23 KR KR1019920022063A patent/KR960013213B1/ko not_active Expired - Fee Related
- 1992-11-23 US US07/980,928 patent/US5469414A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
KR930010926A (ko) | 1993-06-23 |
EP0543654B1 (en) | 1998-10-28 |
EP0543654A2 (en) | 1993-05-26 |
EP0543654A3 (enrdf_load_stackoverflow) | 1994-02-16 |
US5469414A (en) | 1995-11-21 |
DE69227434D1 (de) | 1998-12-03 |
DE69227434T2 (de) | 1999-03-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR960013213B1 (ko) | 위치맞춤 제어시스템 | |
US5585976A (en) | Digital sector servo incorporating repeatable run out tracking | |
US5369345A (en) | Method and apparatus for adaptive control | |
US6118616A (en) | Digital servo control method for controlling a head driver for moving a head to a target track | |
US6903897B1 (en) | Performance of a rotary actuator in a disk drive | |
US5917672A (en) | Disk file head positioning servo system incorporating adaptive saturated seek and head offset compensation | |
KR960006874B1 (ko) | 포지션닝 제어시스템 | |
US5072318A (en) | Disk file with adaptive cancellation of nonrepeatable disk runout | |
EP0010664B1 (en) | Method and apparatus for positioning a transducing head | |
JP3740189B2 (ja) | 位置決め適応制御装置並びに情報記憶装置 | |
EP0441407A1 (en) | System for positioning an object | |
US5404255A (en) | Disk apparatus and its control method | |
US5721648A (en) | Multirate digital control system for use with a system having a linear transfer function, such as a head positioning system in a magnetic disc drive | |
WO2000003389A1 (en) | Current profile shaping to reduce disc drive seek time variation and acoustic noise generation | |
US4980876A (en) | Single stage track seek method | |
CA1189187A (en) | Servo control of seek operation in magnetic disk drive | |
US5940239A (en) | Velocity/position estimator of magnetic head in magnetic disk driving apparatus | |
US5659438A (en) | Head positioning control system using stored voice coil motor correction data | |
US6728061B2 (en) | Head position control method, control device for disk device and disk device | |
US7504795B2 (en) | Head position control method, head position control device, and disk device | |
EP0605239B1 (en) | Information recording and/or reproducing apparatus | |
US5329409A (en) | Correction of current feedback offset for disc drive servo systems | |
US7609474B2 (en) | Seek control method, seek control device and disk device | |
US6449117B1 (en) | Reducing acoustic noise using a current profile during initial stages of a disc drive seek | |
US7570452B2 (en) | Two degree of freedom position control method, two degree of freedom position control device, and medium storage device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
PA0109 | Patent application |
St.27 status event code: A-0-1-A10-A12-nap-PA0109 |
|
PA0201 | Request for examination |
St.27 status event code: A-1-2-D10-D11-exm-PA0201 |
|
R17-X000 | Change to representative recorded |
St.27 status event code: A-3-3-R10-R17-oth-X000 |
|
P11-X000 | Amendment of application requested |
St.27 status event code: A-2-2-P10-P11-nap-X000 |
|
P13-X000 | Application amended |
St.27 status event code: A-2-2-P10-P13-nap-X000 |
|
PG1501 | Laying open of application |
St.27 status event code: A-1-1-Q10-Q12-nap-PG1501 |
|
E902 | Notification of reason for refusal | ||
PE0902 | Notice of grounds for rejection |
St.27 status event code: A-1-2-D10-D21-exm-PE0902 |
|
P11-X000 | Amendment of application requested |
St.27 status event code: A-2-2-P10-P11-nap-X000 |
|
P13-X000 | Application amended |
St.27 status event code: A-2-2-P10-P13-nap-X000 |
|
G160 | Decision to publish patent application | ||
PG1605 | Publication of application before grant of patent |
St.27 status event code: A-2-2-Q10-Q13-nap-PG1605 |
|
E701 | Decision to grant or registration of patent right | ||
PE0701 | Decision of registration |
St.27 status event code: A-1-2-D10-D22-exm-PE0701 |
|
GRNT | Written decision to grant | ||
PR0701 | Registration of establishment |
St.27 status event code: A-2-4-F10-F11-exm-PR0701 |
|
PR1002 | Payment of registration fee |
St.27 status event code: A-2-2-U10-U11-oth-PR1002 Fee payment year number: 1 |
|
PN2301 | Change of applicant |
St.27 status event code: A-5-5-R10-R13-asn-PN2301 St.27 status event code: A-5-5-R10-R11-asn-PN2301 |
|
PN2301 | Change of applicant |
St.27 status event code: A-5-5-R10-R13-asn-PN2301 St.27 status event code: A-5-5-R10-R11-asn-PN2301 |
|
R18-X000 | Changes to party contact information recorded |
St.27 status event code: A-5-5-R10-R18-oth-X000 |
|
R18-X000 | Changes to party contact information recorded |
St.27 status event code: A-5-5-R10-R18-oth-X000 |
|
PR1001 | Payment of annual fee |
St.27 status event code: A-4-4-U10-U11-oth-PR1001 Fee payment year number: 4 |
|
PR1001 | Payment of annual fee |
St.27 status event code: A-4-4-U10-U11-oth-PR1001 Fee payment year number: 5 |
|
PN2301 | Change of applicant |
St.27 status event code: A-5-5-R10-R13-asn-PN2301 St.27 status event code: A-5-5-R10-R11-asn-PN2301 |
|
PR1001 | Payment of annual fee |
St.27 status event code: A-4-4-U10-U11-oth-PR1001 Fee payment year number: 6 |
|
PR1001 | Payment of annual fee |
St.27 status event code: A-4-4-U10-U11-oth-PR1001 Fee payment year number: 7 |
|
PR1001 | Payment of annual fee |
St.27 status event code: A-4-4-U10-U11-oth-PR1001 Fee payment year number: 8 |
|
PR1001 | Payment of annual fee |
St.27 status event code: A-4-4-U10-U11-oth-PR1001 Fee payment year number: 9 |
|
FPAY | Annual fee payment |
Payment date: 20050926 Year of fee payment: 10 |
|
PR1001 | Payment of annual fee |
St.27 status event code: A-4-4-U10-U11-oth-PR1001 Fee payment year number: 10 |
|
LAPS | Lapse due to unpaid annual fee | ||
PC1903 | Unpaid annual fee |
St.27 status event code: A-4-4-U10-U13-oth-PC1903 Not in force date: 20061003 Payment event data comment text: Termination Category : DEFAULT_OF_REGISTRATION_FEE |
|
PC1903 | Unpaid annual fee |
St.27 status event code: N-4-6-H10-H13-oth-PC1903 Ip right cessation event data comment text: Termination Category : DEFAULT_OF_REGISTRATION_FEE Not in force date: 20061003 |
|
P22-X000 | Classification modified |
St.27 status event code: A-4-4-P10-P22-nap-X000 |